The funding comes at a time when Tumblr is experiencing massive growth across the board. Tumblr founder and CEO David Karp told us last June that the service recently hit 400 million pageviews in a single day (which comes down to roughly 5,000 pageviews a second).

According to Wortham, 30 million blogs have been created using Tumblr to date, which now generate more than 40 million posts every day.

Update: here’s more info from the official release:

This year alone, we’ve grown from 2 to 13 billion pageviews a month, with tremendous international adoption. Mobile pageviews have increased 17 times during that period. And the 30 million blogs on Tumblr now generate more than 40 million posts per day, passing 10 billion total posts just two weeks ago.

This year our little team has grown from 15 to 50, and it is incredibly important to us that we work with partners who understand our vision and share our ambition to build the best platform for the most creative people in the world.

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Crunchbase

OverviewTumblr is a microblogging platform and social networking website allowing users to post multimedia and other content to a short-form blog. Its users also have the ability to follow other users' blogs, as well as make their blogs private. Much of the Tumblr’s features are accessed from the dashboard interface, where the option to post content and posts of followed blogs appear. This media network …